Overseaming and welting sewing-machine.



PATENTED Arm-2s, 1904.

v F. MALSOH. OVERSBAMING AND WBLTING SEWING MAGHINB.

APPLIOATION FILED MAY 28, 1901.

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F. MALSGE'.

.OVERSEAMING AND WELTING SEWING MACHINE.

APPLICATION FILED my 28, 1901.

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M azmew No. 758,264. PATENTED APR. 26, 1904. v

' IE. MALSGH.

OVERSBAMING AND WELTING SEWING MAGHINE.

APPLIOA'TION FILEDHAY 281 1901.

K0 MODEL. 4 SHEETS-SHEET 3.

r PATBNTED APR. 26, 1904. 1. MA sqH; 1 OVEYRSBAMING LAND 'WELTING SEWINGMAOBINE.

APPLICATION IILBD MAY 28, 1901. v N0v MODEL. 4 SHEETS-SHEET 4.

I I I l *7 UNITED ST TES FRANK MALSCH, OF CAMDEN, NEW JERSEY, ASSIGNORTO THE INDUSTRIAL Patented April 26, 1904.

PATENT OFFICE.

MANUFACTURING COMPANY, OF CAMDEN, NEW JERSEY, A QORPORA- TION OF NEWJERSEY.

OVERSEAMING 'AND WELTING SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 758,264, dated April26, 1904.

Application filed May 28, 1901. I

To all whmn it may concern:

Be it known that I, FRANK Manson, a citizen of the United States ofAmerica, residing at Camden, in the county of Camden and State of NewJersey, have invented new and useful Improvements in Overseaming andWelting Sewing-Machines, of which the following is a specification. Myinvention relates to overseaming sew- I ing-machines especially adaptedto hem or welt the edges of tubular knit goods, as sleeves of shirts,leggings, or hose, &c.; and it consists of stitch-forming and feedingdevices especially adapted for this particular kind of work; and myinvention further consists of the improvements hereinafter more fullydescribed, and pointed out in the claims.

The invention will be more fully understood taken in connection with theaccom- 2o panying drawings, forming part hereof, and? in which- -Figure1 is a front elevation of a machine embodying my invention. Fig. 2 is asectional plan view taken above the cloth-plate. 2 5 Fig. 3 is an endelevation of the machine, the horn or sleeve-support being removed. Fig.4 is a section substantially on the line 4 4 of Fig. 1. Fig. 5 is asection on the line 5 5 of Fig. 1. Fig. 6 is a section on the line 6 6of 0 Fig. 1. Fig. 7 is a top view of the machine. Fig. 8 is a plan viewshowing the presser foot, Welter, and mechanism on top of thecloth-plate. Fig. 9 is a front view of the Welter. Fig. 10 is a frontview of the thread- 3 5 carrying looper and its mechanism, showing thesame in adepressed position and ready to take loop from thestitching-needle. Fig.11 is a similar view. Fig. 12 is a view of awelted edge of a piece of fabric when being trimmed and sewed. Fig. 13is a view of a piece of fabric, showing the finished hemmed edge. Fig.14: is a perspective view of the stitchforming mechanism, showing therelative positions thereof when manipulating the two sewing-threads; andFig. 15-is a similar view.

Referring now to the drawings fora further description of my invention,A is the base of the machine; A, the machine-arm; B,the main shaft; C,the cloth-plate with born or sleeve-.

Serial No. 62,237. (No model.)

support a, and E the needle-bar. This needle-bar E is arrangedin aslanting position, leaning with its upper end toward the rear in orderto bring the needle 6 into operative position with a thread-carryinglooper cl and a loop-spreader s, as will be more fully described. Theneedle-bar E is mounted in guides a on the machineearm A and receivesoscillatory motion from a rock-shaft H, which is driven from the mainshaft B by the eccentric Z2, eccentric-strap [6 and arm h of therock-shaft H. The upper end of the eccentricstrap 6 is adjustablysecured to the said arm in in order to vary the throw of the needlebarE, which is connected to the rock-shaft H by'means of the arm if andlink 6'.

The thread-carrying looper 03 operates in a vertical plane parallel withthe main shaft and in rear of thestitching-needle c. This looperconsists of a Teshaped lever, whose upper end is adapted to carry athread and engage a loop of the thread of the stitching-needle 6. At itsstem 0? the looper d is pivoted to one end of a link (Z which latterishinged with its other end a? to the base of the machine. The lower end(i of the looper d is pivoted to a vibrating double-armed. lever d,trunnionedto the machine-base at (Z and receiving its motion from therock shaft H by means of the conmeeting-rod d and arm If. Thisarrangement of the thread-carrying looper 0? permits the same of havingits upper end almost vertical and directly at the left side of theneedle 6 when at its lower position, as shown in Fig. 10, and whenmoving upward it passes toward the right of the needle and keeps inproximity to the same, so that the stitch mechanism occupies but littleroom in order to place hose or sleeves of small diameter over the horn cto have their edges trimmed and welted.

The loop-spreader s is located entirely above the cloth-plate and movesin a horizontal plane to take a loop from the thread-carrying looper cland present it to the stitching-needle e, as will be further described.This loop-spreader sis provided with a vertical shaft .9, journaled in abearing of the machine-arm A, and on the upper end of this shaft isattached an arm 8 to actuate the said spreader 8. Motion is imparted tothe shaft 3' from the main shaft B by an eccentric b eccentricstrap 6*,bellcrank lever 6 journaled at a to the machinearm A. The upper end ofthis lever b is connected.to the free end of the arm .9 of theloopspreader shaft .9 by the connecting-rod s and in each revolution ofthe main shaft B the spreader s is brought once into proximity to thestitching-needle e and back to its startingpoint.

The feed-bar f is slotted and straddles with its front end an eccentricf of the main shaft B to raise and lower the said feed-bar. The rear endof the feed-bar f is hinged to a vertical plate f journaled at f 3 tothe machinebase A, and is provided with a slotted extension f, to whichone end of a connection-rod f is adjustably secured. On the machine-baseA is fulcrumed a swinging lever f which is pivotally secured at itsupper end to the said connection-rod f and provided with aslidingeccentric-box f mounted over an eccentric f on the main shaft B toactuate the said plate f and With it. the feed-bar f. By the means justdescribed a very accurate and positive feed, driven at a high speed, isobtained.

- The pressure-foot 10 is secured to the lever 0, hinged at p to thecloth-plate C, and a handle 10 is pivotally connected to the arm toraise the said foot p against the action of the spring 19*. Thispresser-foot is also provided with a finger 10 over which theoverseamstitches are formed and cast off, andwith a recess 10 for theupper movable and actuating trimmer-blade t. The trimmer shown in theaccompanying drawings of this application is .made the subject of adivisional application for patent filed July 1, 1902, Serial No.114,028, and does not form a part of this application; but for makingthe operation of this machine clear it is deemed advisable to give adescription of such trimmer. This trimmer-blade is secured to areciprocating block t moving in guides t of a block t, securedadjustably to the machine-arm A. The latter I is provided with a groovet into which a key of the block 25* fits, so that the same, with thetrimmer-blade 6, may be moved closer to or farther away from the needle(2 in order to change the width of the seam or welt.

The reciprocating block 25 is actuated from the rock-shaft H by means ofa gear-sector if on said shaft and meshes with a toothed lever h pivotedto the machine-arm A. v A link it connects the said lever with the saidblock t and operates the trimmer-blade tvertically. The blade t can alsobe adjusted vertically and is mounted in a V-shaped groove 25 of theblock in which groove it is held by the screw t. The lower end of thisblade t operates in a slot t provided in the upper end of avertically-arranged arm t, pivoted at t to the machine-bed A. This arm Zis not fastened anywhere except at its pivotal connection,

which allows it to follow the upper operatingblade t when adjusted toany width of seam, and it may be remarked that one corner of the upperblade t is always in engagement with-the slotted arm 2 as shown in Fig.3. To lead the trimmed-off material away, a chute 2f is provided andfastened to the cloth-plate C.

The Welter W may be of any suitable shape and construction, butpreference is given to the one shown in Figs. 8 and 9 as being simpleand efficient. The bracket w is adjustably secured to the cloth-plate Cand is provided with a bent plate w, adapted to foldthe edge of thefabric into the shape shown in Fig. 12, the finger or projection wserving to accomplish this result.

The operation of my improved overseaming and welting machine is asfollows: A sewingthread at is led through the guide a, tension device 12guide a to the stitching-needle e, and another thread 9" is led throughthe guide 1*, tension device r eye 1' eye o on the thread-carryinglooper d, and through the upper eye thereof. The edge of the fabric onis then bent as shown in Fig. 12- and inserted into the Welter w, Figs.8 and 9. The machine is then started, and as the stitching-needle a,with its thread n, penetrates the fabric the thread-carrying looper (Zis in a position to the left of the needle and just back of the same, asshown in Fig. 10. The looper (i then engages the loop at the back of theneedle and moves with the same upward and to the right of the needle, asshown in Fig. 14. In this position the needle ,6 has moved upward andthe loop-spreader s has moved close to the thread-carrying looper d,from the rear of which it takes a loop of the thread r and presents thesame to the stitching-needle a, as shown in Fig. 15, so that when thelatter again descends it fastens the loop of the thread 1' to the top ofthe fabric, forming the stitch, as clearly shown in Figs. 12, 14, and15. After the seam is finished the welt is turned over in the mannershown in Fig. 13.

It will be understood by those skilled in the art to which my inventionappertains that log modifications may be made without departing from thespirit of the invention.

Having thus described the nature and objects of my invention, what Iclaim as new, and desire to secure by Letters Patent, is-

1. In an overseam sewing-machine, having areciprocatingthread-carryingstitching-needle slanting with its upper endtoward the rear of the machine its complemental actuating and feedmechanism and tongued presser-foot and throat-plate, thecombination witha threadcarrying looper formed integral with a T- shaped lever adaptedto move said looper upward and longitudinally in a vertical planeintersecting' the line of travel of the slanting stitching-needle, of aloop-spreader and means for reciprocating the same in a horizontal planeabove the cloth-plate, so that its free end passes in proximity and infront of the stitching-needle to engage the thread of the loops carriedby the looper and convey the same over the top of the presser-foot,Where it will be secured by the needle, substantially as and for thepurposes set forth.

2. In an overseam sewing-machine, in combination with a suitable feedingdevice, a reciprocating thread-carrying stitching-needle slanting Withits upper end toward the rear of the machine, a throat-plate and apresserfoot, a tongue on each of said throat-plate and presser-foot, ofa thread-carrying looper moving ina vertical plane, a vibrating arm,whose free end is pivoted to the lowerend of said looper, a link pivotedwith one end to the machine-base and having its other end connected withan extension or lug ofthe said looper, and a loop-spreader operating ina horizontal plane above the cloth-plate, sub-- stantially as and forthe purposes set forth.

3. In an overseam sewing-machine, in comverhaving'its free end pivotedto the lower end of said looper, a link pivotally connected at one endto the machine base and at its other to the said looper at a point abovethe conneotion with the said arm, a loop -spreader nesses.

FRANK MALSCH.

Witnesses:

HENRY H. MARTER, J r., CLARENCE L. DU Bow.

operating in a horizontal plane above the'cloth-

